Thanks Andi, any new compositions coming on video?
My default Sibelius Playback Configuration was always set to the default 'Sibelius Sounds' - I now changed it to 'General MIDI (basic)', but why this will make a difference since the default sounds do come with Sibelius I don't know; we'll see... My Opening Files settings were as you suggested anyway.
I still don't see why Sibelius would try to find VE connections when by default I don't ask it to when I open it...
Cheers.
@musos: This user does malfunction more often than is convenient, in this case I don't think it's his fault. My Logic also opens without the Vienna key, maybe it is a Sibelius problem, it is just very annoying, very unprofessional!